Shuliang Zhang, Ph.D., is senior director for the Coty Testing Institute, where he oversees both consumer and clinical testing in skin care and color cosmetics. Prior to this, he served as the clinical research manager for Unilever Home and Personal Care. His expertise is understanding skin as a substrate, skin cleansing and care technologies, and their effect on skin structure and function. His work at Unilever's China facility was heavily involved in designing tests to measure the true effects of products on skin. There, he oversaw panel testing with volunteers using the company's personal care products.